11.14 Bar Chart Labels
%>% ds ggplot(aes(x=wind_dir_3pm)) + geom_bar() + geom_label(stat="count", aes(label=comma(..count..)), vjust=-0.2, size=3) + scale_y_continuous(labels=comma, limits=c(0, 23000)) + labs(x=vnames["wind_dir_3pm"], y="Count")
A ggplot2::geom_label() can be used to add highlighted labels to a chart. Here for example they are added to a bar chart. Also see Section 11.19 to add just text and and ?? to add labels to a bar chart with dodged bars.
Notice the use of scales::comma() for the labels as should be standard practice.
To tune the plot we’ve increased the y-axis to fit the label using the
limits= option of the ggplot2::scale_continuous() function.
Exercise: further tuning to improve the presentation.
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